The brash actress and creator of HBO’s “Girls” has canceled two events in Europe promoting her memoir “Not That Kind of Girl: A Young Woman Tells You What She's ‘Learned’” after a columnist for National Review accused her of sexually abusing her younger sister, Grace.

To my Belgian readers, so very sorry to miss the Antwerp Book Fair today but I can't wait to come back and eat fries with you. Much love.

To columnist Kevin D. Williamson, passages in the memoir showed Lena’s parents were “enablers of some very disturbing behavior that would be considered child abuse in many jurisdictions — Lena Dunham’s sexual abuse, specifically, of her younger sister, Grace, the sort of thing that gets children taken away from non-millionaire families without Andover pedigrees and Manhattanite social connections.” He mentions a scene where a 7-year-old Lena “pries open” her sister’s vagina when her sister was a toddler.

Dianna E Anderson, author of upcoming “Damaged Goods: New Perspectives On Christian Purity” took a screen shot of one of the pages in question:

Lena fired back on Twitter over the weekend with a series of tweets, including: “Usually this is stuff I can ignore but don't demean sufferers, don't twist my words, back the f*** up bros.” and “The right wing news story that I molested my little sister isn't just LOL- it's really f***ing upsetting and disgusting.”

And by the way, if you were a little kid and never looked at another little kid's vagina, well, congrats to you.

A scroll through the Amazon.com reviews of Lena’s bestseller, released Sept. 30, only shows raves, such as this line from Michiko Kakutani of The New York Times: “The gifted [Lena] Dunham not only writes with observant precision, but also brings a measure of perspective, nostalgia and an older person’s sort of wisdom to her portrait of her (not all that much) younger self and her world .... By simply telling her own story in all its specificity and sometimes embarrassing detail, she has written a book that’s as acute and heartfelt as it is funny.”